Table 1
Critical densities (nc) of the excited rotational levels of H2D+ and D2H+, in order of increasing energy (Hugo et al. 2009), used in the models presented in this paper.
| Species | nc [ cm-3] | Species | nc [ cm-3] | Species | nc [ cm-3] | Species | nc [ cm-3] |
|
|
|||||||
| oH2D+ | – (111) | pH2D+ | – (000) | oD2H+ | – (000) | pD2H+ | – (101) |
| 4.14 × 105 (110) | 2.94 × 106 (101) | 8.80 × 106 (111) | 2.42 × 106 (110) | ||||
| 2.60 × 107 (212) | 9.13 × 107 (202) | 1.47 × 107 (202) | 3.55 × 107 (212) | ||||
| 8.15 × 107 (211) | 6.02 × 108 (303) | 1.47 × 107 (211) | 1.77 × 108 (221) | ||||
| 3.35 × 108 (313) | 4.94 × 107 (404) | 1.77 × 108 (220) | 1.13 × 107 (303) | ||||
| 6.02 × 108 (312) | 4.94 × 107 (221) | 1.44 × 108 (313) | 3.00 × 109 (312) | ||||
Notes. The corresponding rotational level (JKaKc) is shown in parentheses after each value of critical density. The assumed fractional abundances are X(oH2D+) = 10-10, X(pH2D+) = 10-9, X(oD2H+) = 10-10, X(pD2H+) = 10-11, while the temperature is set to T = 10 K.
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